SIGABRT when cvReleaseImage

Question

I think I'm confusing with pointers...

Vision vis;
    IplImage* imgB0=cvCreateImage(img_sz, IPL_DEPTH_32F, 1);
    IplImage* imgB1=cvCreateImage(img_sz, IPL_DEPTH_32F, 1);
    //Get next frame
    vis->getFrame();
    imgB0=vis->image;
    usleep(3);
    vis->getFrame();
    imgB1=vis->image;
    cvAddWeighted(imgB0, 1./(float)2., imgB1,1./(float)2.,0,imgB1);
    cvReleaseImage(&imgB0); //<-SIGABRT
    ...

Vision.h:

 class Vision
    {
    public:
        IplImage* image;
...

Vision.cpp:

void Vision::getFrame()
    {
        image = cvQueryFrame(capture);
    }

Any ideas? Thanks!

`Vision vis;` . `vis` is a stack allocated object and `.` operator needs to be used to access it's members. I amn't sure how you are using `->` operator on it to access it's members and getting a run time error. Am I missing something ? — Mahesh, Jul 12 '11 at 14:38
Vision::Vision() { image = 0; capture = cvCreateCameraCapture(1); — EnneKappa, Jul 12 '11 at 15:08

score 3 · Answer 1 · answered Jul 12 '11 at 14:52

3

FRom HighGUI Reference Manual:

The returned image should not be released or modified by user.

You're also leaking the two cvImages you create.

answered Jul 12 '11 at 14:52

user786653

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hmm.. what's this.. "reference manual"? Not familiar with the term. This is Stack Overflow; we don't need no stinking documentation here! – Lightness Races in Orbit Jul 12 '11 at 14:55
So, i can't release imgB0 and imgB1? :( – EnneKappa Jul 12 '11 at 15:09
2

@EnneKappa: Not the ones from `cvQueryFrame`. You might want something like `void Vision::getFrame() { image = cvCloneImage( cvQueryFrame(capture) ); }` – user786653 Jul 12 '11 at 15:16

SIGABRT when cvReleaseImage

1 Answers1